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🆕 为AP处理器配置进程调度
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@ -6,6 +6,7 @@
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#include <driver/timers/timer.h>
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#include <process/process.h>
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#include <sched/sched.h>
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#include <smp/ipi.h>
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static struct acpi_HPET_description_table_t *hpet_table;
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static uint64_t HPET_REG_BASE = 0;
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@ -50,11 +51,16 @@ hardware_intr_controller HPET_intr_controller =
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void HPET_handler(uint64_t number, uint64_t param, struct pt_regs *regs)
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{
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//printk("(HPET)");
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// printk("(HPET)");
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switch (param)
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{
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case 0: // 定时器0中断
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++timer_jiffies;
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// 将HEPT中断消息转发到ap:1处理器
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ipi_send_IPI(DEST_PHYSICAL, IDLE, ICR_LEVEL_DE_ASSERT, EDGE_TRIGGER, 0xc8,
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ICR_APIC_FIXED, ICR_No_Shorthand, true, 1);
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// 若当前时间比定时任务的时间间隔大,则进入中断下半部
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if (container_of(list_next(&timer_func_head.list), struct timer_func_list_t, list)->expire_jiffies <= timer_jiffies)
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set_softirq_status(TIMER_SIRQ);
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@ -63,20 +69,22 @@ void HPET_handler(uint64_t number, uint64_t param, struct pt_regs *regs)
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{
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case 0:
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case 1:
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--sched_cfs_ready_queue.cpu_exec_proc_jiffies;
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--sched_cfs_ready_queue[proc_current_cpu_id].cpu_exec_proc_jiffies;
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++current_pcb->virtual_runtime;
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break;
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case 2:
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default:
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sched_cfs_ready_queue.cpu_exec_proc_jiffies -= 2;
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sched_cfs_ready_queue[proc_current_cpu_id].cpu_exec_proc_jiffies -= 2;
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current_pcb->virtual_runtime += 2;
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break;
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}
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if (sched_cfs_ready_queue.cpu_exec_proc_jiffies <= 0)
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/* 由于目前只有BSP处理器会收到HPET中断,因此这里只会标记BSP处理器的进程需要调度
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if (sched_cfs_ready_queue[proc_current_cpu_id].cpu_exec_proc_jiffies <= 0)
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{
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current_pcb->flags |= PROC_NEED_SCHED;
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}
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*/
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break;
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@ -155,8 +163,6 @@ int HPET_init()
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// 使用I/O APIC 的IRQ2接收hpet定时器0的中断
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apic_make_rte_entry(&entry, 34, IO_APIC_FIXED, DEST_PHYSICAL, IDLE, POLARITY_HIGH, IRR_RESET, EDGE_TRIGGER, MASKED, 0);
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*(uint64_t *)(HPET_REG_BASE + MAIN_CNT) = 0;
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io_mfence();
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*(uint64_t *)(HPET_REG_BASE + TIM0_CONF) = 0x004c; // 设置定时器0为周期定时,边沿触发,投递到IO APIC的2号引脚(这里有点绕,写的是8259的引脚号,但是因为禁用了8259,因此会被路由到IO APIC的2号引脚)
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@ -166,8 +172,6 @@ int HPET_init()
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rtc_get_cmos_time(&rtc_now);
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kinfo("HPET Initialized.");
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*(uint64_t *)(HPET_REG_BASE + GEN_CONF) = 3; // 置位旧设备中断路由兼容标志位、定时器组使能标志位
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io_mfence();
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